New Query Options tray added

This is a cherry-picked branch the clears up the old PR:
https://github.com/apache/couchdb-fauxton/pull/78

For comments regarding this PR, see the original PR. For scope
and discussion of the fix, see the Jira ticket:
https://issues.apache.org/jira/browse/COUCHDB-2347

Closes COUCHDB-2347
import index module
load indexes module
add couch watermark
add window-resizeable-half class
use <%- instead of <%=
load new view also on click in dropdown
resizing two-panes
import template-styles
delete routes in documents
use new queryoptions-tray